Magnetic separator



(No Model.) 2 sheets-sheen.

G. A. GILBERT.

MAGNETIC SBPARATOR. No. 348,121. Pate :Zz-yf N. PErERs rmwumagnph".wmmngmn, ma

(No Model.) 2 Sheets-Sheet 2.

MAGNETIC SEPARATOR.

110. 848,121. Panented 118g. 24, 1888.

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UNITED STATES PATENT Ori-ICEo GEORGE A. GILBERT, OF LINCOLN, ILLINOIS.

MAGNETIC SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 348,121, dated August24, 1886.

Application filed October 23, 1385. Serial No. 180,705.

(No model.)

To aZZ whom it kmay concern:

Be it known that I, GEORGE A. GILBERT, of Lincoln, in the county ofLogan, and in the State of Illinois, have invented certain new anduseful Improvements in Machines for Separating Magnetic from Non-Magnetic Substances; and I do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates to devices for separating magnetic fromnon-magnetic substances, and will be fully described hereinafter.

In the drawings, Figure l is a plan View of my device. Fig. 2 is a sideview, Fig. 3, a section on line x x, Fig. l. Fig. 4 is a front end Viewof the cylinder of my device. Fig. 5 is alongitudinal vertical sectionthrough the same.

A is the frame of my machine, and B is the cylinder. The latter is ofsteel, and consists of a single sheet that is joined at its edges, as atb, with a leather or other non-magnetic substance interposed. The metalcomposing the cylinder is magnetized, and each edge of the sheet ofwhich is composed forms one pole of the magnet. M'IlieIbinding-'Qetsmust of a necessity be of a iiAon-magvnetjmxmgt/al The cylinde`Bhswpulleys C C', one secured about each of its ends, and a non-magneticpacking is interposed between the cylinder and adjacent surface of eachpulley. The pulley C has a journal, O2, that tits in a swingingbearing-box, D, and the pulley C has a journal, C3, that turns in anadjustable box, D', the box D being supported by screwbolts E, thatextend through the frame into lugs E on the box, while the box D issupported by like bolts that are adjustable up and down in slots f inthe frame,to give the desired pitch to the cylinder. The boxes are eachprovided with a pair of lugs, g g, and each pair supports a bar, G,across the end of the cylinder above its horizontal center, and thesebars in turn support each an end of a box or trough, H, that extendsfrom one end of the cylinder to the other, as shown in Fig. 5. In eachend of the trough is provided a housing, It, for a coiled spring, h, andthese springs support each a leg, 7c, of a scraper that projects out ofthe trough H and up against the inner peripheryoiepylinder, so that asthe cylinderqisrtunned by means of a belt, L, its innerI surface will befreed by the scraper from all adhering matter, which latter will bedeposited in the trough H.

The cylinder is fed through a hopper, M, and spout M, the material beingcarried in by a roller, N, in the bottom of the hopper. This roller isdriven by a belt, N and pulleys O and O. The edges of the sheet thatcomposes cylinderB are joined by aspiral or diagonal seam, preferably,so that the scraper will shear past its joint without engagement withit.

The scraper is made of any non-magnetic substance.

The operation of my device is very simple. I

As-the cylinder revolves slowly,the magnetic substances that are in thegrain come in contact withthcsurface of thel cylinder, adhere thereto,and are carried upto the scraper, which dislodges them. I

Having thus fully described my invention, WhatI claim as new, and desireto secure by Letters Patent, is-

A cylinder for magnetic separators,consist ing of a single sheet ofsteelpermanently magnetized and joined at its edges, in combination witha non-magnetic strip interposed between said edges, a frame in whichsaid cylinder is suspended, and mechanism for revolving said cylinder.

In testimony that I claim the foregoing have hereunto set my hand, atMilwaukee, in the county of Milwaukee and State of Wisconsin, in thepresence of two witnesses.

- GEORGE A. GILBERT.

VitIiesses:

STANLEY S. S'roUT, MAURICE F. .FEE/in.v

